Tuesday, May 28, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, MAY 28, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0412E
SUNSET: 1912E
OVERNIGHT RAINFALL, TURNED INTO A WARM AND HUMID DAY TODAY….
Rain showers pushed through overnight, some of which were on the
moderate to heavy side at times. 0.51″ of water was left in the
gauge by this morning, bringing the monthly total over 4″ now.
This will ensure the month finishes yet again above normal. As a
matter of fact, every month so far this year with the exception
of February has seen above normal precipitation. The total
departure for the year is now up to 7.35″!
Clouds and fog early this morning gradually broke leaving us
with a mix of sun and clouds into this afternoon. All in all its
been a fairly decent day.
Temperatures have warmed into the upper 70s by the 1pm observation
after starting the day on the mild side with a low of 64F. The
dew point is high today with readings in the mid 60s, so it is
quite humid out there once again today.
Winds have been steady, generally out of the southwest to west-
southwest. The average speed thus far is around 12mph. It has
become gusty early this afternoon with frequent gusts of 25-30mph
occurring, however the peak gust for the day so far was way back
between midnight and 1am with a value of 36mph.
Visibility has been gradually improving from the low values of
early this morning. It was under 1/4 of a mile as we were the
fog very early, but it has gradually improved to near 40 mile
early this afternoon.
The maximum temperature so far today is 79F degrees, which is
9 degrees above the normal high of 70F. The minimum temperature
since midnight is 64F degrees, which is 12 degrees above the
normal low of 52F.
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Today’s Observations:
7 A.M.
Weather: Broken stratus fractus, overcast stratocumulus, few breaks
in overcast all quadrants
Temperature: 66F; Dew Point: 65F; Relative Humidity: 98%
Wind: WSW @ 10G15 kts
Sea-level pressure: 1005.8 mb; 29.70 in. Hg: falling, then rising
Visibility: 20 miles, thin fog
6-hr Max temp: 66F
6-hr Min temp: 64F
24-hr Precip: 0.51 inches
BHO SA 1155 E4 BKN 10 OVC 20 058/66/65/2410G15/970/ FEW BINOVC ALQDS
THN F ALQDS/ 8/7// 55001 6001/ 70051 10066 20064
10 A.M.
Weather: Broken cumulus
Temperature: 72F; Dew Point: 66F; Relative Humidity: 82%
Wind: WSW @ 8G17 kts
Sea-level pressure: 1005.6 mb; 29.70 in. Hg: rising, then falling
Visibility: 35 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E15 BKN 35 056/72/66/2408G17/970/ HAZY/ 8/200 58002
1 P.M.
Weather: Broken cumulus
Temperature: 79F; Dew Point: 63F; Relative Humidity: 59%
Wind: WSW @ 11G20 kts, peak wind WSW 30mph at 12:13 P.M.
Sea-level pressure: 1005.2 mb; 29.68 in. Hg: steady, then falling
Visibility: 40 miles, hazy
6-hr Max temp: 79F
6-hr Min temp: 66F
6-hr Precip: 0.00 inches
BHO SA 1755 E35 BKN 40 052/79/63/2411G20/968/ HAZY PK WND 2426/13/
8/200 58004 10079 20066
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SUMMARY FOR MONDAY, MAY 27, 2024
TEMPERATURE (DEGREES F)
MAX…….75 NORMAL…..70
MIN…….61 NORMAL…..51
MEAN……68 NORMAL…..60
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+8
TOTAL DEPARTURE FOR THE MONTH…………………….+42 [+1.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE MONTH…………..208 DEPARTURE…….-28
TOTAL HEATING UNITS FOR THE SEASON…………5365 DEPARTURE……-758
TOTAL HEATING UNITS LAST SEASON TO DATE…….5180 DEPARTURE……+185
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….3 DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE MONTH……………30 DEPARTURE…….+11
TOTAL COOLING UNITS FOR THE SEASON…………..30 DEPARTURE……..+8
TOTAL COOLING UNITS LAST SEASON TO DATE………25 DEPARTURE……..+5
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E36 S @ 09:46 P.M.
VECTOR #1 (1-Sec)……….37 S @ 02:38 P.M.
VECTOR #2 (1-Sec)……….40 SSE @ 03:13 P.M.
DAVIS #1……………….35 SSE @ 03:10 P.M.
DAVIS #2 ………………46 SSE @ 02:45 P.M.
RMY #1 (Instantaneous)…..39 SSE @ 03:13 P.M.
RMY #2 (Instantaneous)…..42 SSE @ 03:13 P.M.
MERLIN…………………34 S
RICHARDS (C5C) (Inst)…….M
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………29 S @ 02:45 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..26 @ 02:40 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..28 @ 02:39 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………25 SSE @ 02:40 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 S @ 10:20 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..25 S @ 02:40 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..28 SSE @ 02:39 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……….M
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……11.4 S [274 total miles]
VECTOR #1…………….11.4
VECTOR #2…………….12.3
DAVIS #1……………..11.1 SSE
DAVIS #2……………..11.8 SSE
RMY #1……………….11.1 SSE
RMY #2……………….12.3 SE
RICHARDS (C5C)…………..M
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.51 DEPARTURE…..+0.38
TOTAL PRECIPITATION FOR THE MONTH…………..4.45 DEPARTURE…..+1.17
TOTAL PRECIPITATION FOR THE YEAR (2024)…….29.41 DEPARTURE…..+7.35
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.8 DEPARTURE…..-42.9
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PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
5/1 53/42/48/-5/0.06/0.0/177/21 18 ESE VEC1 18 ESE RMY 18
5/2 69/44/57/+3/0.21/0.0/535/63 35 NE VEC1 36 NE RMY 35 TSTM
5/3 57/44/51/-3/0.02/0.0/408/48 24 NE VEC1 24 NE RMY 25
5/4 55/44/50/-4/0.00/0.0/589/69 22 ENE VEC1 21 NE RMY 21
5/5 51/42/47/-8/0.35/0.0/000/00 21 S VEC1 22 S RMY 21
5/6 75/46/61/+6/0.02/0.0/343/40 20 SW VEC1 18 SW RMY 20
5/7 78/55/67/+12/0.00/0.0/851/99 23 NW VEC1 24 NE RMY 23
5/8 62/49/56/+1/0.60/0.0/078/09 30 S VEC1 31 S RMY 31 TSTM
5/9 63/45/54/-2/0.00/0.0/588/68 33 NW VEC1 33 NW RMY 34
5/10 56/42/49/-7/0.00/0.0/572/66 28 ENE VEC1 27 ENE RMY 27
5/11 55/39/47/-9/0.00/0.0/617/71 26 ENE VEC1 26 NE RMY 27
5/12 60/41/51/-6/T/0.0/305/35 16 WSW VEC1 15 SW RMY 15
5/13 68/45/57/0/0.00/0.0/663/76 25 S VEC1 25 SE RMY 26
5/14 76/48/62/+5/T/0.0/718/82 33 SSW VEC1 33 SSW RMY 32
5/15 73/53/63/+6/0.46/0.0/079/09 24 ENE VEC1 24 E RMY 24
5/16 56/52/54/-4/1.02/0.0/141/16 32 ENE VEC1 32 ENE RMY 31
5/17 66/50/58/0/0.00/0.0/662/75 29 ENE VEC1 28 ENE RMY 27
5/18 58/50/54/-4/0.26/0.0/000/00 32 NE VEC1 33 NE RMY 34
5/19 53/48/51/-7/0.22/0.0/000/00 30 NE VEC1 30 NE RMY 30
5/20 65/48/57/-2/0.00/0.0/452/51 18 S VEC1 17 SSE RMY 18
5/21 84/50/67/+8/0.00/0.0/648/73 22 SSW VEC1 22 SSW RMY 22
5/22 88/56/72/+13/0.00/0.0/854/96 32 SSW VEC1 32 SSW RMY 33
5/23 75/61/68/+9/0.42/0.0/…/.. 31 SSW VEC1 30 SSW RMY 31 TSTM
5/24 82/59/71/+11/0.00/0.0/…/.. 38 W VEC1 38 W RMY 37
5/25 80/55/68/+8/0.00/0.0/…/.. 24 S VEC1 23 SW RMY 25
5/26 79/58/69/+9/0.30/0.0/…/.. 22 S VEC1 22 S RMY 22
5/27 75/61/68/+8/0.28/0.0/…/.. 36 S VEC1 37 S RMY 39
5/28 The low since midnight is 64F, the daily normal low is 52F.
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MAY DAILY RECORDS TO DATE
NONE…
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MAY 28
HIGH 92F IN 2016
LOW 39F IN 1917
PRECIP 2.48 INS 1906
PEAK GUST 51e MPH NE IN 1946
RECORDS FOR MAY 29
HIGH 93F IN 1919
LOW 35F IN 1902
PRECIP 1.63 INS 1990
PEAK GUST 55e MPH NNW IN 1943, WNW IN 1945
TODAY’S REPORT PREPARED BY: Matt Douglas
